[Boatanchors] GB> Re: WRNO's transmitter.
Robert Nickels
ranickel at comcast.net
Mon Mar 23 16:52:50 EDT 2009
Sandy wrote:
>
> For a long time after the Harris rig went down, he tried getting on
> the 40 meter frequency with a Johnson Valiant driving some Henry
> amplifiers! After the Henry amplifiers went kaput, he used just the
> Johnson Valiant by itself. I repaired it 2-3 times. Worst was using a
> very large ferrite balun to try and match a 50 ohm transmitter outpu
> to whatever impedance the log periodic was! It was a big "jury rig"!!
>
Great stuff, Sandy - please share any other recollections you may have.
The article did mention "having tried Henry RF power amplifiers without
full success" - so that explains what they were trying to do - running
ham gear as AM linears for hours on end! Also the CCA engineers had
some real challenges maintaining a good match to that balun when
switching frequencies. By the way, the two engineers interviewed
were Larry Thom and Chris Baum, if those names happen to ring a bell.
73, Bob W9RAN
More information about the Boatanchors
mailing list